Economical, RF transparent, selective code phased array antenna processor

Abstract

A single chip diversity beamforming antenna array processor is disclosed. The processor utilizes low-power and low area circuits to achieve combining game mitigate the effects of multipath fading provide spatial suppression and provide diversity gain to a single input receiver. The device is radiofrequency transparent yet provides antenna gain by selective three G and four G code acquisition and tracking of a desired downlink channel.

Description

BACKGROUND[0001]Far beyond the requirements of voice communications, the rapid growth in wireless distribution of music, video, applications, images, news, and entertainment has driven service providers to address network capacity. In an indoor environment, or outdoors with significant multipath, the received signal can arrive via many paths and angles, and bluffs, the signal and gene may not be concentrated in one beam. In a network where mobile terminals receive multiple baseband signal station signals simultaneously, the interference from adjacent cells can become the dominant performance limiting factor. Since wireless adapters and handsets within a cell share the downlink channel, service providers must continue to invest in enhancing their infrastructure. However consumer product grade handsets and wireless adapters are sometimes considered disposable or have relatively shorter useful life, due to battery life or the advent of fashionable killer applications and features.[0002...

AI Technical Summary

Benefits of technology

[0012]The processor utilizes low-power and low area circuits to achieve combining gain, mitigate the effects of multipath fading, provide spatial suppression, and provide diversity gain to a single input receiver. The device is radiofrequency transparent yet provides antenna gain by selective three G and four G code acquisition and tracking of a desired downlink channel.

[0013]Each de-spreader circuit obtains a PN code of a desired base station received from the baseband processor using standard commands. This allows fast integration with legacy design without modification to baseband circuits for Firmware. The results maximize the signal from a desired base station while minimizing both the noise and interfering signals from adjacent base stations.

[0016]A thin radiofrequency digitizer substantially reduces the cost and power consumption of quantifying each antenna elements energy input.

Problems solved by technology

In a network where mobile terminals receive multiple baseband signal station signals simultaneously, the interference from adjacent cells can become the dominant performance limiting factor.

However consumer product grade handsets and wireless adapters are sometimes considered disposable or have relatively shorter useful life, due to battery life or the advent of fashionable killer applications and features.

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